<?php
require_once ('dbutils.php');
require_once ('utilities/Emailer.php');

class Feedback {
	var $dbutils;
	function __construct() {
		$this->dbutils = new DbUtils();
	}
	
	function handleCommand($command) {
		if ($command == 'sendMail') {
			$this->sendMail($_POST['role'],$_POST['topic'],$_POST['email'],$_POST['tel'],$_POST['allowSendRights'],$_POST['content']);
		}
		else {
			echo "Kommando nicht unterstuetzt.";
		}
	}
	
	function isUserAlreadyLoggedInForPhp() {
		if(session_id() == '') {
			session_start();
		}
		if (!isset($_SESSION['angemeldet']) || !$_SESSION['angemeldet']) {
			return false;
		} else {
			return true;
		}
	}
	
	private function getGeneralItemFromDb($field) {
		$pdo = $this->dbutils->openDbAndReturnPdo();
	
		$aValue="";
		$sql = "SELECT setting FROM %config% where name='$field'";
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute();
		$row =$stmt->fetchObject();
		if ($row != null) {
			$aValue = $row->setting;
		}
		return $aValue;
	}
	
	function spamcheck($field) {
		// Sanitize e-mail address
		$field=filter_var($field, FILTER_SANITIZE_EMAIL);
		// Validate e-mail address
		if(filter_var($field, FILTER_VALIDATE_EMAIL)) {
			return TRUE;
		} else {
			return FALSE;
		}
	}
	
	function sqlresult($pdo,$sql,$sqlval) {
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute();
		$row =$stmt->fetchObject();
		if ($row != null) {
			return($row->$sqlval);
		} else {
			return 0;
		}
	}
	function getdbinfo() {
		$pdo = $this->dbutils->openDbAndReturnPdo();
		
		$info = "\n\nWaiting print jobs:\n";
		// workprintjobswaiting
		$foodjobs = $this->sqlresult($pdo,"select count(id) as number from %printjobs% where type=1","number");
		$drinkjobs = $this->sqlresult($pdo,"select count(id) as number from %printjobs% where type=2","number");
		$payjobs = $this->sqlresult($pdo,"select count(id) as number from %printjobs% where type=3","number");
		
		$info .= "Fs: $foodjobs\n";
		$info .= "Ds: $drinkjobs\n";
		$info .= "Rs: $payjobs\n\n";
		
		// db sizes
		$info .= $this->getDatabaseSizes($pdo);
		return $info;
	}
	
	function getDatabaseSizes($pdo) {
		$sql = 'SELECT table_schema "Data Base Name",
    			sum( data_length + index_length ) / 1024 / 1024 "Data Base Size in MB",
    			sum( data_free )/ 1024 / 1024 "Free Space in MB"
				FROM information_schema.TABLES
				GROUP BY table_schema';
		$pdo = $this->dbutils->openDbAndReturnPdo();
		$stmt = $pdo->prepare($this->dbutils->resolveTablenamesInSqlString($sql));
		$stmt->execute();
		$result = $stmt->fetchAll();
		$dbInfo = "DB-info:\n";
		
		foreach($result as $row) {
			$dbInfo .= "DB '$row[0]', db (MB): $row[1], free (MB): $row[2]\n";
		}
		return $dbInfo;
	}
	
	function sendMail($role,$topic,$email,$tel,$allowSendRights,$content) {

		$rights = "Keine Rechteinformation";
		$version = $this->getGeneralItemFromDb('version');
		
		if ($this->isUserAlreadyLoggedInForPhp()) {
			if ($allowSendRights) {
				$rights = "UID=" . $_SESSION['userid'] . "\n";
				$rights .= "UN=" . $_SESSION['currentuser'] . "\n";
				$rights .= " RA=" . ($_SESSION['is_admin'] ? "1" : "0") . "\n";
				$rights .= " RW=" . ($_SESSION['right_waiter'] ? "1" : "0") . "\n";
				$rights .= " RPay=" . ($_SESSION['right_paydesk'] ? "1" : "0") . "\n";
				$rights .= " RB=" . ($_SESSION['right_bill'] ? "1" : "0") . "\n";
				$rights .= " RProd = " . ($_SESSION['right_products'] ? "1" : "0") . "\n";
				$rights .= " RM=" . ($_SESSION['right_manager'] ? "1" : "0");
				$rights .= $this->getdbinfo();
			}
			$server = $_SERVER['HTTP_USER_AGENT'];
			$msg = "Rolle:$role\nEmail:$email\nTel.:$tel\nRechte:$rights\nServer:$server\n\nVersion:$version\n\nNachricht:\n$content";

			$pdo = DbUtils::openDbAndReturnPdoStatic();
			$version = CommonUtils::getConfigValue($pdo, 'version', 'no-version');
			$ok = $this->sendFeedbackToServer($topic, $msg, $version);
			
			echo json_encode($ok);
		} else {
			echo json_encode(array("status" => "ERROR","msg" => "Fehler: Benutzer nicht eingeloggt!"));
		}
		
	}
	
	function sendFeedbackToServer($topic, $msg, $version) {
		$cmd = '';
		$fct = 'Feedback-Form';
		$xhr = $msg;
		$errormsg = $topic;
		$status = '';
		$phpversion = phpversion();

		if (strlen($xhr) > 900) {
			$xhr = substr($xhr, 0, 899);
		}
		if (strlen($errormsg) > 150) {
			$errormsg = substr($errormsg, 0, 149);
		}

		$arr = array("cmd" => $cmd, "fct" => $fct, "xhr" => $xhr, "errormsg" => $errormsg, "status" => $status, "version" => $version, "phpversion" => $phpversion);
		
		$url = "http://www.ordersprinter.de/debug/save.php?cmd=save";
		
		$ch = curl_init();

		curl_setopt($ch, CURLOPT_URL,$url);
		curl_setopt($ch, CURLOPT_POST, 1);
		curl_setopt($ch, CURLOPT_TIMEOUT, 5);
		$query = http_build_query($arr);
		curl_setopt($ch, CURLOPT_POSTFIELDS, $query);
           
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

		$server_output = curl_exec ($ch);

		if($server_output === false)
		{
			$msg = 'Curl-Fehler: ' . curl_error($ch);
			curl_close ($ch);
			return array("status" => "ERROR","msg" => $msg);
			
		} else {
			curl_close ($ch);
			return array("status" => "OK");
		}
	}

}